ATI Radeon HD 3870 Mac Edition vs ATI Radeon X1550 PCI

VS

ATI Radeon HD 3870 Mac Edition

ATI Radeon X1550 PCI

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 256MB VRAM Radeon X1550 PCI to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 3870 Mac Edition 's Advantages

Released 1 years and 5 months late

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (72.06GB/s vs 4.256GB/s)

320 additional rendering cores

ATI Radeon X1550 PCI 's Advantages

Lower TDP (27W vs 106W)

Score

Radeon HD 3870 Mac Edition

VS

Radeon X1550 PCI

Graphics Card

Jun 2008

Release Date

Jan 2007

Radeon R600

Generation

Radeon R500 PCIe

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1126 MHz

Memory Clock

266 MHz

Memory

512MB

Memory Size

256MB

GDDR4

Memory Type

DDR2

256bit

Memory Bus

64bit

72.06GB/s

Bandwidth

4.256GB/s

Render Config

4

Compute Units

-

320

Shading Units

-

16

TMUs

4

16

ROPs

4

-

256 KB

L2 Cache

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

1.808 GPixel/s

12.43 GTexel/s

Texture Rate

1.808 GTexel/s

-

497.3 GFLOPS

FP32 (float)

-

99.46 GFLOPS

FP64 (double)

-

Board Design

106W

TDP

27W

300 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

1x DVI 1x VGA 1x S-Video

1x 6-pin

Power Connectors

None

Graphics Processor

RV670

GPU Name

RV516

RV670 XT (215-0708005)

GPU Variant

-

TeraScale

Architecture

R500

TSMC

Foundry

UMC

55 nm

Process Size

80 nm

0.666 billion

Transistors

0.107 billion

192 mm²

Die Size

100 mm²

Graphics Features

10.1 (10_1)

DirectX

9.0c (9_3)

3.3 (full) 4.0 (partial)

OpenGL

2.1

N/A

OpenCL

N/A

Vulkan

N/A

-

4.1

Shader Model

3.0

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